Question

The expression -270 + 19m represents a submarine that began at a depth of 270 feet below sea level and ascended at a rate of 19 feet per minute. What was the depth of the submarine after 5 minutes? a. 175 feet b. 181 feet c. 181 feet below sea level d. 175 feet below sea level

Answer 1

The depth of the submarine after 5 minutes of ascending at 19 feet per minute from a depth of 270 feet below sea level is '175 feet below sea level'.

Step-by-step explanation:

The given expression that represents the submarine's depth is -270 + 19m. In this equation, '-270' indicates the initial depth of the submarine below sea level, and '19m' represents the rate at which the submarine ascended. The 'm' represents minutes. So, to solve for the depth of the submarine after 5 minutes, we substitute 5 for 'm' in the equation.

So, we have -> -270 + 19*5 = -270 + 95 = -175.

So after 5 minutes, the submarine was at a depth of 175 feet below sea level.

Therefore, the correct answer is d. 175 feet below sea level.

Learn more about Ascending Submarine Depth Calculation